I have a CPU intensive multi-threaded Java application and I'm looking for ways to measure its performance at run time (useful for automation). I tried a few options
我有一个CPU密集型多线程Java应用程序，我正在寻找在运行时测量其性能的方法（对自动化很有用）。我试了几个选择
System.currentTimeMillis();
System.nanoTime();
ThreadMXBean.getThreadCPUTime();
The first two measure real time. The last measures CPU time for only one thread. I want to measure the CPU-time for all threads spawned by the process.
前两个测量实时。最后一个测量只有一个线程的CPU时间。我想测量进程生成的所有线程的CPU时间。
Before resurrecting an old machine and dedicate it for this task, I would like to see what options I have now.
在复活旧机器并将其专门用于此任务之前，我想看看我现在有哪些选择。
I run Linux and a platform dependent solution is acceptable, but least desirable.
我运行Linux并且平台相关的解决方案是可以接受的，但最不可取。
2 个解决方案
#1
11
Try perf4j: http://perf4j.codehaus.org/ I recommend using it along with AOP, but it's not a must. See http://perf4j.codehaus.org/devguide.html#Using_Spring_AOP_to_Integrate_Timing_Aspects for more details on AOP.
试试perf4j：http：//perf4j.codehaus.org/我建议将它与AOP一起使用，但这不是必须的。有关AOP的更多详细信息，请参见http://perf4j.codehaus.org/devguide.html#Using_Spring_AOP_to_Integrate_Timing_Aspects。
#2
2
Try to enable the JVM with Dtrace. It has a lot of performance probes which help you get what ever you want.
尝试使用Dtrace启用JVM。它有许多性能探测器，可以帮助您获得所需的任何内容。
#1
11
Try perf4j: http://perf4j.codehaus.org/ I recommend using it along with AOP, but it's not a must. See http://perf4j.codehaus.org/devguide.html#Using_Spring_AOP_to_Integrate_Timing_Aspects for more details on AOP.
试试perf4j：http：//perf4j.codehaus.org/我建议将它与AOP一起使用，但这不是必须的。有关AOP的更多详细信息，请参见http://perf4j.codehaus.org/devguide.html#Using_Spring_AOP_to_Integrate_Timing_Aspects。
#2
2
Try to enable the JVM with Dtrace. It has a lot of performance probes which help you get what ever you want.
尝试使用Dtrace启用JVM。它有许多性能探测器，可以帮助您获得所需的任何内容。